package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.WebSocketConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Slf4j
@Service
public class OrderServiceImpl implements OrderService {

    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;

    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private OrderDetailMapper orderDetailMapper;

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private AddressBookMapper addressBookMapper;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private WeChatPayUtil weChatPayUtil;

    @Autowired
    private WebSocketServer webSocketServer;

    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    @Override
    @Transactional
    public OrderSubmitVO submint(OrdersSubmitDTO ordersSubmitDTO) {
        //地址为空
        AddressBook addressBook=addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook ==null){
            throw  new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //判断是否超出配送范围
        String address = addressBook.getCityName()+ addressBook.getDistrictName() + addressBook.getDetail();
        if(checkOutOfRange(address))
        {
            throw new OrderBusinessException(MessageConstant.ORDER_DELIVERY_OUT_OF_RANGE);
        }

        //购物车数据为空
        ShoppingCart shoppingCart=new ShoppingCart();
        Long userid=BaseContext.getCurrentId();
        shoppingCart.setUserId(userid);

        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list==null || list.size()==0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }


        //插入订单表
        Orders orders=new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setUserId(userid);
        orders.setAddress(addressBook.getDetail());
        orderMapper.insert(orders);

        List<OrderDetail> orderDetailList=new ArrayList<>();
        //订单明细表
        for (ShoppingCart cart : list) {
            OrderDetail orderDetail=new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);

        //删除购物车
        shoppingCartMapper.deleteById(userid);

        //封装
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .build();
        return orderSubmitVO;
    }

    //OrderServiceImpl
    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//            ordersPaymentDTO.getOrderNumber(), //商户订单号
//            new BigDecimal(0.01), //支付金额，单位 元
//            "苍穹外卖订单", //商品描述
//            user.getOpenid() //微信用户的openid
//        );
        // TODO: 2024/1/1 暂时跳过微信支付接口，直接生成预支付交易单,并执行支付成功操作
        JSONObject jsonObject = new JSONObject();//由于个人微信支付接口未开通，所以直接跳过微信支付接口
        paySuccess(ordersPaymentDTO.getOrderNumber());




        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        // TODO: 2024/1/1 暂时跳过微信支付接口，直接修改订单状态的代码
        Map map = new HashMap(){{
            put("type", WebSocketConstant.NEW_ORDER_TYPE);
            put("orderId", ordersDB.getId());
            put("content", "您有新的订单,请及时处理,"+"订单号: "+outTradeNo);
        }};
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

    /**
     * 订单详情
     * @param id
     * @return
     */
    @Override
    public OrderVO orderDetail(Long id) {
       Orders orders= orderMapper.getById(id);
       List<OrderDetail> orderDetailList= orderDetailMapper.getByOrderId(orders.getId());

       OrderVO orderVO=new OrderVO();
       BeanUtils.copyProperties(orders,orderVO);
       orderVO.setOrderDetailList(orderDetailList);
       return orderVO;
    }

    /**
     * 分页查询，用户
     * @param page
     * @param pageSize
     * @param status
     * @return
     */
    @Override
    public PageResult page(int page, int pageSize,Integer status) {
        PageHelper.startPage(page,pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO=new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);

        Page<Orders> ordersPage=orderMapper.page(ordersPageQueryDTO);

        List<OrderVO> list=new ArrayList<>();
        if (ordersPage!=null &&ordersPage.size()>0){
            for (Orders orders : ordersPage) {
                Long id=orders.getId();
                List<OrderDetail> detailList = orderDetailMapper.getByOrderId(id);

                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(detailList);

                list.add(orderVO);

            }
        }
        return new PageResult(ordersPage.getTotal(),list);
    }

    /**
     * 用户取消订单
     *
     * @param id
     */
    @Override
    public void userCancelById(Long id) {
        //根据id查询订单
        Orders orders = orderMapper.getById(id);
        //判断订单是否存在
        if (orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //如果订单状态到达商家接单以后的阶段，不能直接取消订单
        if (orders.getStatus() >= Orders.CONFIRMED) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        // TODO: 2024/1/1 暂时跳过微信退款接口，直接修改订单状态的代码
//        //订单处于待接单状态下需要进行退款
//        if (orders.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
//            //调用微信退款接口
//            try {
//                weChatPayUtil.refund(
//                    orders.getNumber(),//商户订单号
//                    orders.getNumber(),//商户退款单号
//                    orders.getAmount(),//订单金额
//                    orders.getAmount()//退款金额
//                );
//            } catch (Exception e) {
//                throw new OrderBusinessException(MessageConstant.ORDER_REFUND_ERROR);
//            }
//            //修改订单支付状态为退款
//            orders.setPayStatus(Orders.REFUND);
//        }
        //修改订单状态为已取消,并设置取消原因和取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(MessageConstant.ORDER_CANCELLED_BY_USER);
        orders.setCancelTime(LocalDateTime.now());
        //更新订单
        orderMapper.update(orders);
    }

    /**
     * 再来一单
     * @param id
     */
    @Override
    public void repetition(Long id) {
        // 查询当前用户id
        Long userId = BaseContext.getCurrentId();

        // 根据订单id查询当前订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);

        // 将订单详情对象转换为购物车对象
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {
            ShoppingCart shoppingCart = new ShoppingCart();

            // 将原订单详情里面的菜品信息重新复制到购物车对象中
            BeanUtils.copyProperties(x, shoppingCart, "id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());

            return shoppingCart;
        }).collect(Collectors.toList());

        // 将购物车对象批量添加到数据库
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    /**
     * 商家订单页面显示订单
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult adminpage(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        Page<Orders> page=orderMapper.page(ordersPageQueryDTO);
        // 部分订单状态，需要额外返回订单菜品信息，将Orders转化为OrderVO
        List<OrderVO> orderVOList = getOrderVOList(page);
        return new PageResult(page.getTotal(),orderVOList);
    }

    /**
     * 商家订单页面显示订单
     * @param page
     * @return
     */
    private List<OrderVO> getOrderVOList(Page<Orders> page) {
        List<Orders> ordersList=page.getResult();
        List<OrderVO> orderVOS=new ArrayList<>();

        if (!CollectionUtils.isEmpty(ordersList)){
            for (Orders orders : ordersList) {
                OrderVO orderVO=new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                String orderDishes = getOrderDishesStr(orders);
                //封装Vo对象
                orderVO.setOrderDishes(orderDishes);
                orderVOS.add(orderVO);
            }
        }
        return orderVOS;
    }

    /**
     * 商家订单页面显示订单
     * 根据订单id获取菜品信息字符串
     * @param orders
     * @return
     */
    private String getOrderDishesStr(Orders orders) {
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }

    /**
     * 查询每个状态的订单数量
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        //待接单
        Integer toBeConfirmed =orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        //待付款
        Integer confirm=orderMapper.countStatus(Orders.CONFIRMED);
        //派送中
        Integer deliveryIn=orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
        //封装
        OrderStatisticsVO statisticsVo=new OrderStatisticsVO();
        statisticsVo.setConfirmed(confirm);
        statisticsVo.setDeliveryInProgress(deliveryIn);
        statisticsVo.setToBeConfirmed(toBeConfirmed);
        return statisticsVo;
    }

    /**
     * 接单
     * @param ordersConfirmDTO
     */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
       Orders orders= Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }

    /**
     * 拒绝接单
     * @param ordersRejectionDTO
     * @throws Exception
     */
    @Override
    public void cancel(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        Orders orders=orderMapper.getById(ordersRejectionDTO.getId());

        if (!orders.getStatus().equals(Orders.TO_BE_CONFIRMED) || orders==null){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //支付状态 跳过
//        Integer payStatus = orders.getPayStatus();
//        if (payStatus == Orders.PAID) {
//            //用户已支付，需要退款
//            String refund = weChatPayUtil.refund(
//                    orders.getNumber(),
//                    orders.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
//            log.info("申请退款：{}", refund);
//        }

        Orders orders1=Orders.builder()
                .cancelTime(LocalDateTime.now())
                .cancelReason(ordersRejectionDTO.getRejectionReason())
                .status(Orders.CANCELLED)
                .id(orders.getId())
                .build();
        orderMapper.update(orders1);
    }

    /**
     * 取消订单
     * @param ordersCancelDTO
     */
    @Override
    public void cancelOrders(OrdersCancelDTO ordersCancelDTO) {
        Orders orders=orderMapper.getById(ordersCancelDTO.getId());

        //支付状态 跳过
//        Integer payStatus = orders.getPayStatus();
//        if (payStatus == Orders.PAID) {
//            //用户已支付，需要退款
//            String refund = weChatPayUtil.refund(
//                    orders.getNumber(),
//                    orders.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
//            log.info("申请退款：{}", refund);
//        }

        orders.setStatus(Orders.CANCELLED);
        orders.setCancelTime(LocalDateTime.now());
        orders.setId(ordersCancelDTO.getId());
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orderMapper.update(orders);
    }

    /**
     * 派送订单
     * @param id
     */
    @Override
    public void delivery(Long id) {
        Orders orderDB=orderMapper.getById(id);

        // 校验订单是否存在，并且状态为3
        if (orderDB == null || !orderDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders=new Orders();
        orders.setId(orderDB.getId());
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
        orderMapper.update(orders);
    }

    /**
     * 完成订单
     * @param id
     */
    @Override
    public void complete(Long id) {
        Orders ordersDB=orderMapper.getById(id);

        if (ordersDB==null ||!ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders=new Orders();
        orders.setId(ordersDB.getId());
        orders.setDeliveryTime(LocalDateTime.now());
        orders.setStatus(Orders.COMPLETED);
        orderMapper.update(orders);
    }

    /**
     * 用户催单
     * @param id
     */
    @Override
    public void reminder(Long id) {
        Orders ordersDB=orderMapper.getById(id);

        if (ordersDB==null){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //通过webSocket向客户端推送催单消息
        Map map = new HashMap(){{
            put("type", WebSocketConstant.URGE_ORDER_TYPE);
            put("orderId", ordersDB.getId());
            put("content", "用户催单,请及时处理,"+"订单号: "+ordersDB.getNumber());
        }};
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

    /**
     * 检查客户的收货地址是否超出配送范围
     *
     * @param address
     * @return
     */
    private boolean checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
        return false;
    }


}
